Molecule Tutorials - Herong's Tutorial Examples - v1.26, by Herong Yang
What Is DNA/RNA Base and Sequence Pair
This section provides a quick introduction of DNA/RNA base pairs and sequence pairs. A base pair is pair of two complementary nucleobases linked by hydrogen bonds. A sequence pair is a pair of two complementary sections of DNA/RNA sequence with their nucleobases form base pairs.
What Is DNA/RNA Base Pair? - A DNA/RNA base pair is a pair of complementary nucleobases used in DNA/RNA linked together by hydrogen bonds. There are only 3 possible combinations of two nucleobases that complementary to each other as shown below (source: chemtube3d.com):
Dash lines in the above diagram show hydrogen bonds in each pair. G-C pair has 3 hydrogen bonds instead of 2. So it is harder to separate a G-C pair than A-T or A-U pair.
What is DNA/RNA Sequence Pair? - A DNA/RNA sequence pair is a section of a DNA/RNA sequence lined up with another complementary section of itself or another DNA/RNA sequence in the reverse order. All nucleobases of the first section forms base pairs with corresponding nucleobases of the second section as shown below (source: quora.com):
The left part of the above digram shows a DNA sequence pair formed in a double-helix conformation. The right part shows multiple base pairs.
Table of Contents
Molecule Names and Identifications
►Nucleobase, Nucleoside, Nucleotide, DNA and RNA
What Is RNA (Ribonucleic Acid)
What Is DNA (Deoxyribonucleic Acid)
DNA Primary Structure - Double Helix
►What Is DNA/RNA Base and Sequence Pair
ChEMBL Database - European Molecular Biology Laboratory
PubChem Database - National Library of Medicine
INSDC (International Nucleotide Sequence Database Collaboration)
HGNC (HUGO Gene Nomenclature Committee)